One of the difficulties in real world modeling is incorporating a portfolio of projects with different construction periods, start dates, retirement dates and financing periods.
I have tried alternative methods to model this issue and I think the best answer is a function that computes the percent of a period that a project is alive (under construction, in operation, repaying debt etc.). This function requires a common time period and then a start date and an end date for every project. I think it is much better than the alternative of using data tables.
The function is also documented in the function library.
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One of the difficulties in real world modeling is incorporating a portfolio of projects with different construction periods, start dates, retirement dates and financing periods.
I have tried alternative methods to model this issue and I think the best answer is a function that computes the percent of a period that a project is alive (under construction, in operation, repaying debt etc.). This function requires a common time period and then a start date and an end date for every project. I think it is much better than the alternative of using data tables.
The function is also documented in the function library.